Patents Assigned to W. Schlafhorst AG & Co.
  • Patent number: 5402951
    Abstract: A textile winding machine having a transport system for recirculating bobbin tube support members carrying empty bobbins, and diverting tube support members carrying partially unwound bobbins, and tubes having remnant windings of yarn thereon into diverting paths is disclosed. Each bobbin has an information transfer device which contains data pertaining to the bobbin tube on which it is carried. At least one reading device is present in the transport system for reading the information transfer device. The transport system comprises a storage path for storing tube support members; a device for diverting tube support members; and a control unit connected to the reading device for controlling the diverting device to divert tube support members which tube support members are determined by the control unit in conjunction with the reading device to the storage path to have predetermined storage path conditions.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: April 4, 1995
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Ferdinand-Josef Hermanns, Juergen Breuer, Franz-Josef Flamm
  • Patent number: 5399028
    Abstract: A support disk assembly and a method of producing a support disk (1) for the bearing of a spinning rotor. The support disk assembly (1) has an exchangeable annular collar (4) that can be secured between fastening rings (5, 6, or 17). The collar (4) has side surfaces (8,9) that extend parallel and orthogonally to the center axis (M) of the support disk assembly in a radially inward annular region (P). The side surfaces (8,9) located in a radially outward annular region (K) of the collar (4) extend convergently and are partly clamped by flanges (14) on the fastening rings (5, 6, or 17), leaving the peripheral bearing surface (10) of the collar exposed for supporting engagement of the rotor shaft.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: March 21, 1995
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Hans Raasch
  • Patent number: 5398878
    Abstract: A method and apparatus for simplified control of an automatic yarn winder to enable production of as many full yarn packages as possible. A predetermined total number of full packages to be produced is divided by the number of winding stations of the automatic winder. In the event that the quotient is not an integer, it is rounded off up and down for each winding station to an integer within an upper and a lower limit value with the sum of all the rounded-off values being equal to the predetermined number. The winding stations are taken out of operation individually as each station's rounded-off value is reached. The automatic winder has a detector for detecting the number of finished packages per winding station and memory locations for storing the detected number. An input device for inputting the predetermined values for the respective predetermined number of packages of the various winding stations is coupled with a circuit for deactuating winding stations once the value is reached.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: March 21, 1995
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Dieter Mohrke
  • Patent number: 5398879
    Abstract: An improved carrier for textile bobbins of the type having a disk-like base plate and a bobbin mounting pin upstanding therefrom of an outside diameter slightly smaller than the inside diameter of the tube of the bobbin to be supported and transported, wherein the pin is equipped with a frictional non-slip surface. As a result, if pointwise contact with the inside diameter of the tube occurs, e.g., by relative tilting of the tube, friction is brought to bear to counteract shifting of the tube on the pin. The invention is based on the recognition that in every situation in which relative motion between the bobbin and the carrier occurs, the bobbin becomes tilted on the carrier. The non-slip surface of the pin advantageously comprises an elastic surface, e.g., rubber or silicone. According to another aspect of the present invention, the pin diameter can be adapted to various inside diameters.
    Type: Grant
    Filed: May 18, 1993
    Date of Patent: March 21, 1995
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Gregor Rueth
  • Patent number: 5398494
    Abstract: A sliver opening and fiber feeding device for opening a sliver into individual fibers and feeding the individual fibers to the rotor of an open end spinning machine is provided with a polytetrafluoroethylene coating for the interior surface of the housing of the sliver feeding and opening device, in particular, the trash discharge passage. The polytetrafluoroethylene coating advantageously has a relatively low co-efficient of friction to thereby reduce the affinity of sticky material, which may be present in the sliver due to the presence of insect residue or the like, to stick to the interior surfaces of the device. The polytetrafluoroethylene coating is included on an insert element mounted in the discharge passage, with the insert element being capable of being retrofitted in an existing sliver opening and fiber feeding device.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: March 21, 1995
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Heinz-Georg Wassenhoven, Elke Hodenius, Ute Kraehe, Udo Papenfuss
  • Patent number: 5394334
    Abstract: A multistation textile machine with a control and information processing system includes production stations each having at least one control device, control computers each being assigned to a production station and connected to the control device, a data bus connected to the control computers, and a CPU connected to the data bus having an adjusting device for set-point operating data to be transmitted over the data bus to the control computers. The control computers each control a production station in accordance with input set-point operating data and with a problem program in communication with the production station. The control computers each receive and process actual data of the production station and communicate with the production station and the CPU. The CPU transmits set-point operating data of the production stations and a complete problem program for the control computers over the data bus to the control computers.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: February 28, 1995
    Assignee: W. Schlafhorst AG & CO.
    Inventor: Karsten Simon
  • Patent number: 5391045
    Abstract: Sliver-processing textile machines and can exchange stations include a can transport carriage to be moved in a given direction of motion for manipulating sliver cans having upper rims with outer peripheries. A can manipulating device is movable on the can transport carriage above the cans in a direction transverse to the given direction of motion for manipulating the sliver cans during an automatic can exchange. Four gripper elements for gripping the sliver cans to be manipulated are disposed at four mutually spaced-apart locations at the outer peripheries of the upper rims of the cans.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: February 21, 1995
    Assignee: W. Schlafhorst AG & CO.
    Inventors: Hans Raasch, Hans-Werner Schwalm
  • Patent number: 5390484
    Abstract: A method for automatic silver can exchange operations includes the transport of full sliver cans on a sliver can transport carriage to and between the spinning stations of a textile spinning machine and is particularly suitable for the exchange of sliver cans at spinning stations of the type having a back row position for supporting a sliver can and a front row position for supporting another sliver can. In a situation in which sliver is still being drawn from the frontmost sliver can while the backmost sliver can is empty, the method includes the step of initially transferring the running sliver can to the transport carriage, positioning a can support on the transport carriage for receipt of the empty backmost sliver can, and transfer of the empty backmost sliver can. Thereafter, the method includes the step of indexing movement of a full sliver can on the transport carriage to position the can for subsequent transfer to the back row position of the spinning station.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: February 21, 1995
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Hans-Werner Schwalm
  • Patent number: 5385007
    Abstract: A pot spinning device is disclosed for spinning textile yarn in which the spinning pot has an inner wall and the pot is driven by a magnetic bearing device for rotating the spinning pot. The magnetic bearing device provides radial and axial support of the pot. The magnetic bearing device may comprise at least one electromagnet disposed at each end of the spinning pot. At least the ends of the spinning pot may be formed of a magnetic material positioned to interact with the magnetic bearing device. The magnetic material may be formed as an annularly magnetic portion at each end. At least one sensor may be connected to the magnetic bearing device for detecting a displacement of the spinning pot. The magnetic bearing device may have a control device for stabilizing the position of the spinning pot against displacement due to exterior forces. The spinning pot may comprise a rotor of the electric motor. The electric motor may include an annular rotor on the spinning pot.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: January 31, 1995
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Robert Hartel, Karl-Josef Brockmanns
  • Patent number: 5375691
    Abstract: A peg tray type carrier for transporting textile yarn tubes has a codable, readable and erasable electronic information carrying device such as a memory chip connected to a transmitting-receiving antenna arranged in the area of the central axis of the peg tray to achieve essentially the same effective contactless transmission interval to a compatible transmitting-receiving antenna of a reading, erasing and encoding device, which may be located for example stationarily along a peg tray transport conveyor, essentially without regard to the rotational disposition of the peg tray about its axis. Inductive, capacitive or electromagnetic forms of contactless coupling are possible for information transmission.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: December 27, 1994
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Ulrich Wirtz
  • Patent number: 5366065
    Abstract: An apparatus removes textile articles such as empty tubes or full yarn packages from the individual posts on which such articles are supported simultaneous with advancing movement of the posts. The textile articles are removed in a direction generally parallel to the axis of the posts so that during removal detrimental binding of the textile article relative to the post does not occur. According to one aspect of the invention, at least one pair of endless belts are mounted in spaced, parallel relation to one another to form an elongate opening therebetween. The elongate opening is aligned with the travel path of the textile articles being advanced on the posts so that the textile articles automatically enter the elongate opening and are engaged by the endless belts without the need to stop or otherwise control the advancing movement of the textile articles.
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: November 22, 1994
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Hans Grecksch, Heinz Buhren, Dieter Vits, Manfred Hauers
  • Patent number: 5364039
    Abstract: A transport system for transporting textile bobbins to winding stations of a textile winder on individual bobbin tube support members having a reciprocating supply conveyor extending along the winding stations for supplying bobbins on tube support members to the winding stations, a plurality of generally parallel winding station conveyors having entrances at the supply conveyor for receiving tube support members reciprocating on the supply conveyor and a plurality of control members disposed for engagement by tube support members, each control member having a first portion normally disposed in the tube support member path for engagement by tube support members and being displaced by the engagement and a second portion adjacent the winding station conveyor entrance normally disposed out of engagement with the tube support members and being connected at the first portion for movement into a position for engaging tube support members reciprocating on the supply conveyor to guide the tube support members past the
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: November 15, 1994
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Dieter Mohrke, Jurgen Backhaus
  • Patent number: 5362007
    Abstract: A textile machine producing cross-wound bobbins or cheeses includes a number of work stations having a creel with a bobbin changing position for holding a yarn package having an outer surface and an end surface and being disposed on a tube having an end, and a movable servicing device serving the work stations for changing takeup bobbins and having a drive apparatus for a bobbin in the changing position and a yarn suction device for seeking, aspirating and pulling off a yarn end that has run up onto the outer surface of the yarn package. An apparatus for forming a yarn reserve on a bobbin at a winding station includes a yarn guide element being disposed on the creel and movable toward and away from the bobbin for clasping the tube over a sector of at least 90.degree. in the circumferential direction of the tube and winding the yarn end on the end of the tube to make a yarn reserve. The yarn guide element has a yarn guide surface to be placed against the end face of the yarn package.
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: November 8, 1994
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Hans Raasch
  • Patent number: 5359844
    Abstract: An apparatus for transporting full sliver cans to the spinning stations of a textile spinning machine for can exchange operations thereat during which empty sliver cans are exchanged for full sliver cans. The apparatus includes a can transport carriage having three can supports at equal angular spacings from one another relative to a vertical axis and a device for indexing movement of the three can supports to sequentially position each can support at a can transfer location at which a can is transferred between the can transport carriage and the textile spinning machine. Each can support is sequentially indexed to a standby location from the can transfer location and, thereafter, to a ready location from which the can support is indexed into the can transfer location. The can transfer and ready locations are arranged such that two sliver cans supported at these locations are substantially aligned in the direction of travel of the can transport carriage.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: November 1, 1994
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Hans-Werner Schwalm
  • Patent number: 5359160
    Abstract: A peg tray type carrier for transporting textile yarn tubes has a codable, readable and erasable electronic information carrying device such as a memory chip connected to a transmitting-receiving antenna arranged in the area of the central axis of the peg tray to achieve essentially the same effective contactless transmission interval to a compatible transmitting-receiving antenna of a reading, erasing and encoding device, which may be located for example stationarily along a peg tray transport conveyor, essentially without regard to the rotational disposition of the peg tray about its axis. Inductive, capacitive or electromagnetic forms of contactless coupling are possible for information transmission.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: October 25, 1994
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Ulrich Wirtz
  • Patent number: 5341549
    Abstract: An apparatus for removing yarn remnants from a cop tube, especially a cop tube located a caddy, includes a device for removing yarn remnants from the cop tube. An elastically deformable energy storing device is disposed in the vicinity of the bottom of the cop tube. A holder for the yarn remnant removing device is movable along the cop tube and toward the energy storing device for storing potential energy.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: August 30, 1994
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Ulrich Wirtz, Hans Grecksch, Wolfgang Irmen, Helmuth Hensen, Walter Bohmer
  • Patent number: 5337882
    Abstract: A transport system for mutually independent caddies carrying bobbins or bobbin tubes and having base plates, includes one transport path and another transport path entering the one transport path at a converging point. Moving surfaces, in particular surfaces of conveyor belts, carry the caddies along the transport paths by frictional engagement, with the caddies standing on the base plates. At least one additional contact surface is disposed at the converging point for touching a caddy passing through the converging point and imposing an additional motion component upon the caddy.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: August 16, 1994
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Helmut Kohlen, Helmuth Hensen, Karl-Heinz Floh
  • Patent number: 5337551
    Abstract: A tube transport assembly is provided for a textile machine system in which tubes having yarn or the like wound thereon are transported to, and empty tubes are transported from, a textile machine. Two different transport apparatus are each operable to transport a different kind of tube support member along a respective endless transport path. In one aspect of the present invention, an alternating positioning device alternately positions the two types of tube support members and a tube transfer device is operable to transfer the tubes and full yarn packages from the type of tube support members on which they are initially supported to the other type of tube support members. In one embodiment of the tube transport assembly, the alternating positioning device is a rotatable annular disk having a plurality of tube support member retaining positions uniformly spaced annularly thereon.
    Type: Grant
    Filed: November 4, 1991
    Date of Patent: August 16, 1994
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Hans Grecksch, Thomas Heidtmann, Norbert Bohnen
  • Patent number: 5335776
    Abstract: The present invention provides an assembly for transporting tube support members which each individually support a textile yarn package in an upright disposition thereon. The transporting assembly includes a cyclicly reversing endless belt which transports tube support members to and between a plurality of individual transport paths which each lead through a respective winding station of a textile winding machine. The individual transport paths each comprise a pair of endless belts which automatically draw tube support members onto the individual transport paths from the delivery path when the tube support members are disposed on the delivery path at the transport path at a predetermined height relative to the individual transport path.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: August 9, 1994
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Jurgen Backhaus
  • Patent number: 5336285
    Abstract: A textile machine suction device for dust and other pneumatically conveyable waste includes a separator chamber, a negative pressure line discharging waste into the separator chamber, a first filter screen in the separator chamber for separating the waste from an air stream and for collecting the waste, a second filter screen disposed in the separator chamber, and a negative pressure source acting upon the first and the second filter screens. The two filter screens are disposed adjacent one another in a constellation causing an increasing outflow of air through the second filter screen with increasing soiling and impermeability of the first filter screen to the air stream. The negative pressure line forms a rotating air stream in the separator chamber approximately parallel to the first filter screen for forcing the waste and in particular yarn waste into a motion stripping soiling from the first filter screen.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: August 9, 1994
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Manfred Grandek, Ferdinand Szucs